Revision: 65544
http://sourceforge.net/p/brlcad/code/65544
Author: brlcad
Date: 2015-07-08 01:44:03 +0000 (Wed, 08 Jul 2015)
Log Message:
-----------
add a readme with notes on the history and current state of affairs with links
to two evaluation systems that are likely easily applicable to our needs.
Modified Paths:
--------------
brlcad/trunk/src/libpc/CMakeLists.txt
Added Paths:
-----------
brlcad/trunk/src/libpc/README
Modified: brlcad/trunk/src/libpc/CMakeLists.txt
===================================================================
--- brlcad/trunk/src/libpc/CMakeLists.txt 2015-07-07 20:57:35 UTC (rev
65543)
+++ brlcad/trunk/src/libpc/CMakeLists.txt 2015-07-08 01:44:03 UTC (rev
65544)
@@ -5,6 +5,7 @@
)
set(pc_ignore_files
+ README
solver_test.cpp
vm_test.cpp
)
Added: brlcad/trunk/src/libpc/README
===================================================================
--- brlcad/trunk/src/libpc/README (rev 0)
+++ brlcad/trunk/src/libpc/README 2015-07-08 01:44:03 UTC (rev 65544)
@@ -0,0 +1,30 @@
+BRL-CAD has a long history of pithy attempts at constraint solving.
+
+There is a relatively simple forward-kinematic solver that was
+implemented as a GED command (see 'joint' command). It utilizes
+'grip' objects and outboard text files that describe constraint
+relationships. It remained broken and unused for about 20 years until
+it was fixed in 2014. It surprisingly works, and seems to work well
+solving linear relationships (3D geometric constraints).
+
+There is a relatively new system that utilizes 'joint' objects,
+currently creating a 6DoF relationship between objects but with the
+intention of expanding it into supporting other (more constrained)
+joint types like hinges, pivots, saddles, etc. This system is
+integrated into MGED/Archer and is interactively editable with mouse
+controls.
+
+The scope of libpc is to serve as a wrapper over a geometric
+constraint evaluation system with the likely expectation that one or
+more 3rd-party solver will be incorporated to solve parametric
+constraints and joint articulation. The intention and target purpose
+is for librt to rely on this library for data types and evaluation.
+
+
+GECODE
+http://www.gecode.org
+mit
+
+GLOP
+https://developers.google.com/optimization
+apache2
Property changes on: brlcad/trunk/src/libpc/README
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+text/plain
\ No newline at end of property
Added: svn:eol-style
## -0,0 +1 ##
+native
\ No newline at end of property
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